_19th._--Pursuant to arrangement, we set out to-day for Monterey. We were awakened before daylight, but we did not start before noon. Many of us have been in Camargo to-day, to obtain five more mules, and exchange flour for bread. Our haversacks are stored with four days’ provisions. Here is a list of eatables; 1st, bread; 2d, boiled pickled pork; 3d, coffee; 4th, salt. Soon we shall realize the fatigues and trials of a wearisome march. For my future perusal I shall give a minute description of the sufferings and incidents of our tedious journey. The road to-day was ankle deep in dust all the way, which nearly suffocated us. It arose so thick at times, that we could not see the company in front. We, however, kept up our spirits to the highest pitch. Bursts of merriment followed the glances and expressions of all. We were truly an antiquated looking group, with our locks and hair covered faces whitened with the dust. About sundown we arrived at our first encampment, having traveled nine miles. The 1st regiment of Indiana had started in the morning, and had already pitched their tents. The 3d regiment had gone ahead. I feel very tired with sore feet and aching bones. A cup of coffee has helped me somewhat. _20th._--This morning I arose greatly refreshed, and ready to march twenty miles, the reported distance to Mier; but before night I felt very differently, and every step was exceedingly painful. My feet were badly blistered, and every sudden movement of my arms, was like the piercing of sharp instruments. These acute pains were occasioned by the straps and weight of my knapsack, which contained all I possessed. Fancy to yourself the burden I was bound to support. The cartridge box with forty rounds of ounce ball cartridges, bayonet scabbard and belts, the haversack of provisions, canteen with water, musket and knapsack. Let the stoutest carry such loads twenty miles through dust and hot sunshine, and I assure you they will gladly stop for the night. The straps of my knapsack bound me so tight, that I could scarcely breathe. The pain at times was so excessive that I became bewildered, and all things seemed to swim around me. But pride forbade complaint and I jogged on; while others, apparently hardier than myself, gave out, and had their burdens lightened. It was dark when we pitched our tents in sight of Mier. After much seeking, sufficient wood was obtained to boil our coffee, and give light for the writing of these notes.